Alex Getmanearly AI signals
Alex Getman @alexgetmancom · · Updated

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JetBrains MythBusters tested the Ponytail skill for Claude Code

JetBrains MythBusters tested the Ponytail skill for Claude Code

Before that, they analyzed Caveman. Its promised 65% token savings turned into 8.5%, with no cost reduction.

Then came RTK, claiming up to 90% savings. In practice, some tasks became more expensive.

The new review covers Ponytail. Its trick is finding an existing solution before writing code. Tests showed 15% less code, 10% lower costs, 11% faster execution, with no quality loss.

✅ Myth confirmed.

Chart showing that with Ponytail skill (blue line) less code is written compared to without it (green line) as the agent writes code over time.
ClaudeAnthropicJetBrainsClaude CodeAgent harnesses
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